CN114652976B - Intelligent fire prevention control method, fire prevention auxiliary control system and fire prevention control system - Google Patents
Intelligent fire prevention control method, fire prevention auxiliary control system and fire prevention control system Download PDFInfo
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- CN114652976B CN114652976B CN202111463336.8A CN202111463336A CN114652976B CN 114652976 B CN114652976 B CN 114652976B CN 202111463336 A CN202111463336 A CN 202111463336A CN 114652976 B CN114652976 B CN 114652976B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/006—Fire prevention, containment or extinguishing specially adapted for particular objects or places for kitchens or stoves
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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Abstract
The invention relates to an intelligent fire prevention control method, a fire prevention auxiliary control system and a fire prevention control system, wherein the fire prevention auxiliary control system detects the flame height value of a cooker when judging that the vertical moving distance value of a detected cooking utensil moving upwards relative to the cooker is larger than or equal to a preset moving distance threshold value, adjusts and reduces the flame height of the cooker to be smaller than the preset flame height threshold value once judging that the detected flame height value exceeds the preset flame height threshold value, and controls to spray mist-shaped oil mist diluent below a range hood when detecting that the oil mist concentration value below the range hood exceeds the preset oil mist concentration threshold value, so that the oil mist with the current concentration is diluted into oil mist with lower concentration. Therefore, the oil stain accumulated on the range hood is prevented from being ignited by flame exceeding the normal height, the fireproof effect is achieved, and the user can continue to utilize the flame in the ignition state to cook under the condition that the normal flame cannot be extinguished by the oil mist diluent.
Description
Technical Field
The invention relates to the field of kitchen electrical equipment, in particular to an intelligent fire prevention control method, a range hood and an intelligent fire prevention control system.
Background
In the field of kitchen electrical equipment, a range hood and a kitchen range are two important devices. After the kitchen range is started, the started range hood can pump away oil smoke generated by cooking equipment and discharge the oil smoke to the outside so as to keep clean air in a kitchen.
After the range hood is used for a long time, the surface of the range hood is stained with oil stains, and oil drops generated by the oil stains drip down and are gathered on the range along with the increase of the using time, so that the oil drops gathered on the range can generate fire safety hidden trouble under the condition of high-temperature heating.
The Chinese patent application CN110107941A discloses a commercial oil fume purification device and a fire extinguishing control method thereof, the commercial oil fume purification device comprises a range hood main body, an infrared visual detection assembly for monitoring the temperature of an upstream area of the range hood main body and an indoor fire extinguishing device for extinguishing fire on the upstream of the range hood main body, the infrared visual detection assembly is electrically connected with a first controller of the range hood main body, the range hood main body comprises a smoke exhaust pipeline and an outdoor fire extinguishing device for extinguishing fire in the smoke exhaust pipeline, a volatile organic matter sensor for detecting the concentration of volatile combustible substances in the smoke exhaust pipeline is arranged in the smoke exhaust pipeline, and the volatile organic matter sensor is electrically connected with the first controller of the range hood main body. After the range hood main body is started, when the infrared visual detection assembly monitors that the range of the high-temperature area is smaller than the preset temperature range, and the volatile organic compound sensor monitors that the concentration of volatile combustible substances is smaller than a preset concentration value, the range hood main body normally operates; when the infrared visual detection assembly monitors that the range of the high-temperature area is more than or equal to the area of the preset temperature range, the monitoring result of the volatile organic compound sensor is combined: if the volatile organic compound sensor monitors that the concentration of the volatile combustible substances is greater than or equal to a preset concentration value, an indoor fire extinguishing device and an outdoor fire extinguishing device are started to extinguish fire; and if the volatile organic compound sensor monitors that the concentration of the volatile combustible substances is less than the preset concentration value, closing the range hood main body. Wherein, set up volatile organic compounds sensor through the rear end, can avoid extinguishing device maloperation with the infrared visual detection subassembly cooperation of front end.
However, the above patent application CN110107941a also has some problems: with the continuous accumulation of oil stain on the range hood, once the flame height generated by the kitchen range reaches a certain height in the cooking process, the flame is very easy to ignite the oil stain accumulated on the range hood to cause fire. Obviously, the fire extinguishing control scheme in the patent application CN110107941a of the present invention is difficult to timely prevent and control the hidden fire hazard caused by the flame of the cooker, and cannot prevent fire under the condition of ensuring that the flame is at the normal height.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide an intelligent fire prevention control method capable of timely detecting and controlling the fire safety hazard in the cooking process, aiming at the above prior art.
The second technical problem to be solved by the invention is to provide an intelligent fire-protection auxiliary control system which is matched with the intelligent fire-protection control method.
The third technical problem to be solved by the present invention is to provide an intelligent fire protection control system for implementing the above intelligent fire protection control method.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the intelligent fire prevention control method is characterized by comprising the following steps:
step 1, detecting a vertical movement distance value of a cooking appliance moving upwards relative to a stove;
when the vertical moving distance value is larger than or equal to a preset moving distance threshold value, turning to step 3; otherwise, turning to step 5;
step 3, detecting the flame height value of the stove;
step 4, judging according to the detected flame height value:
when the flame height value is larger than or equal to the preset flame height threshold value, adjusting the flame height value of the stove to be smaller than the preset flame height threshold value, and turning to the step 5; otherwise, turning to the step 1;
step 5, detecting an oil mist concentration value below the running range hood;
step 6, judging and processing according to the detected oil mist concentration value:
when the oil mist concentration value is greater than or equal to a preset oil mist concentration threshold value, spraying atomized oil mist diluent below the range hood; otherwise, the step 1 is carried out.
In the intelligent fire prevention control method, a space between a smoke collecting hood of the range hood and a kitchen range is arranged below the range hood.
In another improvement, in step 6, the intelligent fire protection control method further includes: and adjusting the oil mist diluent injection amount according to the detected oil mist concentration value, the oil mist concentration dilution target value and the oil mist rising speed value.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the intelligent fire-prevention auxiliary control system for realizing the intelligent fire-prevention control method in a matching way is characterized by comprising the following steps:
the oil smoke sensor is used for detecting an oil mist concentration value below the operating range hood;
the spraying device sprays mist oil mist diluent to the lower part of the range hood;
the first detection device is used for detecting the vertical movement distance value of the cooking utensil moving upwards relative to the cooker;
the second detection device is used for detecting the flame height value of the stove;
and the controller is respectively connected with the oil smoke sensor, the injection device, the first detection device and the second detection device, performs fusion processing according to the detected oil mist concentration value, the vertical movement distance value and the flame height value, and respectively generates an injection instruction for controlling the injection device and a flame height adjustment instruction for controlling the stove to adjust the flame height.
Further, in the intelligent fire protection auxiliary control system, the injection device includes:
a liquid storage tank for storing oil mist diluent;
the input end of the pump body is communicated with the liquid outlet of the liquid storage tank;
the spraying air tap is provided with a spraying hole which is arranged towards the lower part of the range hood, and the input end of the spraying air tap is communicated with the output end of the pump body.
In the intelligent fire-proof auxiliary control system, the intelligent fire-proof control system is integrated on the range hood.
And the spray air tap is horn-shaped, and the horn mouth of the horn-shaped spray air tap faces the lower part of the range hood.
As another implementation manner of the intelligent fire-prevention auxiliary control system in the invention, in the intelligent fire-prevention auxiliary control system, at least one of the oil smoke sensor, the first detection device, the second detection device, and the controller is disposed on a cooker.
The technical scheme adopted by the invention for solving the third technical problem is as follows: the intelligent fire-proof control system comprises a cooker and is characterized by further comprising any intelligent fire-proof auxiliary control system, and the controller is in communication connection with the cooker.
Compared with the prior art, the invention has the advantages that: the intelligent fire prevention control method comprises the steps of detecting the flame height value of the kitchen range when the vertical moving distance value of the detected cooking appliance moving upwards relative to the kitchen range is judged to be larger than or equal to the preset moving distance threshold value, adjusting and reducing the flame height of the kitchen range to be smaller than the preset flame height threshold value once the detected flame height value exceeds the preset flame height threshold value, and controlling to spray mist-shaped oil mist diluent below the range hood when the concentration value of the oil mist below the range hood is detected to exceed the preset oil mist concentration threshold value, so that the oil mist with the current concentration is diluted into the oil mist with the lower concentration. So, through the flame height of earlier with cooking utensils back of reducing, go to spray vaporific oil mist diluent again, not only avoided surpassing the flame of normal height and lighting the greasy dirt that accumulates on the range hood, reach the fire prevention effect, vaporific oil mist diluent also can not bring combustion-supporting effect for flame because of spraying on the flame that surpasss normal height in addition, can guarantee that the user can continue to utilize the flame that is firing the state to go to cook under the condition that ensures that the oil mist diluent can not put out normal flame.
Drawings
Fig. 1 is a schematic flow chart of an intelligent fire protection control method according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of an intelligent fire protection auxiliary control system according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a range hood according to a second embodiment of the present invention;
FIG. 4 is a schematic diagram of an intelligent fire protection control system according to a second embodiment of the present invention;
fig. 5 is a schematic diagram of an intelligent fire protection control system according to a third embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example one
The embodiment provides an intelligent fire prevention control method. Specifically, referring to fig. 1, the intelligent fire protection control method of the embodiment includes the following steps:
step 1, detecting a vertical movement distance value of a cooking appliance moving upwards relative to a stove; wherein, in the embodiment, the detected vertical movement distance value of the cooking utensil moving upwards relative to the cooker is marked as D, and the cooking utensil is a frying pan;
when the vertical movement distance value is larger than or equal to the preset movement distance threshold value D 0 When D is larger than or equal to D 0 When the user turns the frying pan serving as the cooking utensil over or lifts the frying pan, the flame height of the stove is possibly moved upwards, and the step 3 is executed; otherwise, the frying pan as the cooking utensil is not overturned or lifted by the user, and the condition that the flame height of the stove is not moved upwards does not exist, and the step 5 is carried out;
step 3, detecting the flame height value of the stove; wherein, the flame height value of the detected cooker in the embodiment is assumed to be marked as H;
step 4, judging according to the detected flame height value:
when the flame height value is greater than or equal to the preset flame height threshold value H 0 When H is more than or equal to H 0 When the flame height of the kitchen range exceeds the normal height level (namely the safe height level), the oil stain accumulated on the range hood can be easily ignited by the flame with the current height, and then the flame height value of the kitchen range is adjusted to be smaller than the preset flame height threshold value, so that the flame height of the kitchen range is maintained within the normal height level range, and the step 5 is carried out; otherwise, turning to the step 1;
step 5, detecting an oil mist concentration value below the operating range hood; wherein, it is assumed that the oil mist concentration value below the range hood detected in this embodiment is marked as Q; the lower part of the range hood specifically refers to a space between a fume collecting hood of the range hood and a kitchen range;
step 6, judging and processing according to the detected oil mist concentration value:
when the oil mist concentration value is greater than or equal to a preset oil mist concentration threshold Q 0 When Q is not less than Q 0 When the concentration of the oil mist below the range hood is over high, the mist-shaped oil mist diluent is sprayed below the range hood, so that the oil mist with the current concentration is diluted into the oil mist with the lower concentration; otherwise, if the oil mist concentration below the range hood does not exceed the normal concentration level, the step 1 is executed.
It should be noted that, in this embodiment, the height of the flame of the cooker is first adjusted to be low, and then the mist-like oil mist diluent is sprayed, so that the mist-like oil mist diluent does not bring a combustion-supporting effect to the flame due to being sprayed onto the flame with a height exceeding a normal height.
In order to enable the mist-like oil mist diluent sprayed to the lower portion of the range hood to achieve a better oil mist dilution effect, the intelligent fire control method according to the embodiment further includes, in step 6, an improvement that the oil mist diluent spraying amount is adjusted according to the detected oil mist concentration value, the oil mist concentration dilution target value, and the oil mist rising speed value. Specifically, the process of adjusting the oil mist diluent injection amount according to the detected oil mist concentration value, the oil mist concentration dilution target value and the oil mist rising speed value comprises the following steps:
step a1, detecting an oil mist rising speed value below an operating range hood; wherein, the detected oil mist rising speed value is marked as V;
step a2, acquiring the cross sectional area of an oil stain gathering surface at the front end of an air inlet of the range hood; wherein, the cross-sectional area of the oil stain gathering surface is marked as S;
step a3, according to the detected oil mist rising speed value and the oil stain collecting surface transverse directionThe sectional area is obtained, and the oil smoke accumulation volume of the oil stain accumulation surface accumulated in a first preset time period is obtained; wherein, the first preset time period is marked as T, and the obtained accumulated amount of the oil smoke aggregates is marked as M 1 ，M 1 ＝V·T·S；
A4, obtaining the oil mist diluent injection volume in a first preset time period according to the oil mist concentration dilution target value and the obtained oil smoke accumulation volume; wherein the volume amount of oil mist diluent injection in the first preset time period is marked as M 2 ，M 2 ＝β·V·T 1 ；β>1; beta, the detected oil mist concentration value Q below the range hood and the required dilution time T 1 Is in positive correlation, e.g., β = F (Q, T) 1 ) Beta is a dependent variable, F (Q, T) 1 ) To relate to variables Q and T 1 Is used as a binary function of (1). Specifically, in this embodiment, β = F (Q, T) 1 )＝α·(Q-Q 0 )/T 1 α is a predetermined constant, α>0，Q 0 Is a preset oil mist concentration threshold.
Example two
The second embodiment also provides an intelligent fire-prevention auxiliary control system which is matched with the intelligent fire-prevention control method. Specifically, referring to fig. 2, the intelligent fire-prevention auxiliary control system of this embodiment includes a smoke sensor 11, an injection device 12, a first detection device 13, a second detection device 14, and a controller 15, where the controller 15 is respectively connected to the smoke sensor 11, the injection device 12, the first detection device 13, and the second detection device 14; wherein:
the oil smoke sensor 11 is responsible for detecting the concentration value of oil mist below the operating range hood, wherein the lower part of the range hood is specifically a space between the smoke collecting hood 10 of the range hood 1 and the kitchen range 2;
the spraying device 12 comprises a liquid storage tank 121, a pump body 122 and a trumpet-shaped spraying nozzle 123, wherein the liquid storage tank 121 stores oil mist diluent, the pump body 122 is connected with the controller 15, the input end of the pump body 122 is communicated with the liquid outlet of the liquid storage tank 121, the spraying nozzle 123 is provided with a spraying hole arranged towards the lower part of the range hood, and the input end of the spraying nozzle 123 is communicated with the output end of the pump body 122; the spraying device 12 can spray mist-like oil mist diluent to the lower part of the range hood through the spraying air nozzle 123;
the first detecting device 13 is responsible for detecting a vertical movement distance value of the cooking appliance moving upwards relative to the cooker, for example, the cooking appliance is a wok; the second detection device 14 is responsible for detecting the flame height value of the cooker;
the controller 15 performs fusion processing according to the detected oil mist concentration value, the vertical movement distance value and the flame height value, and respectively generates an injection instruction for controlling the injection device 12 and a flame height adjustment instruction for controlling the cooker to adjust the flame height.
It should be noted that the intelligent fire-prevention auxiliary control system in the second embodiment is integrated on the range hood 1, and specifically, refer to fig. 3.
The second embodiment further provides an intelligent fire prevention control system comprising the range hood 1, and the controller 15 is in communication connection with the kitchen range 2. Referring to fig. 4, after the intelligent fire-prevention auxiliary control system of the second embodiment is integrated on the range hood 1 and is used in cooperation with the range 2, when the controller 15 on the range hood 1 determines that the concentration value of the oil mist detected by the oil smoke sensor 11 is greater than or equal to the preset oil mist concentration threshold value, which indicates that the oil mist exceeds the normal level, the controller 15 instructs the pump body 122 of the injection device 12 to start to operate, so as to spray the oil mist diluent in the liquid storage tank 121 through the spray nozzle 123 to form oil mist, thereby diluting the oil mist below the range hood and reducing the concentration of the oil mist; once the controller 15 determines that the vertical movement distance value detected by the first detection device 13 is greater than or equal to the preset movement distance threshold value, which indicates that the cooking utensil therein has exceeded the normal safe height distance, then the controller determines again that the flame height value of the cooking utensil detected by the second detection device 14 is greater than or equal to the preset flame height threshold value, which indicates that the flame generated by the cooking utensil at this time is too high and exceeds the normal height, and there is a fire hazard that the oil stain collected on the range hood is ignited, then the controller 15 commands the cooking utensil 2 to turn down the fire power of the cooking utensil, so that the flame of the cooking utensil is turned down to be less than the preset flame height threshold value, that is, the flame of the cooking utensil is kept at the normal height, the oil stain collected on the range hood is avoided being ignited, and the fire hazard caused by the flame of the cooking utensil is effectively avoided.
EXAMPLE III
The third embodiment also provides an intelligent fire prevention control system comprising the cooker 2. Referring to fig. 5, in the third embodiment, different from the second embodiment, at least one of the smoke sensor 11, the first detection device 13, the second detection device 14, and the controller 15 in the intelligent fire-protection auxiliary control system is disposed on the cooker 2. For example, the first detection device 13 and the second detection device 14 may be provided on the cooktop 2 as needed.
Claims (9)
1. The intelligent fire prevention control method is characterized by comprising the following steps:
step 1, detecting a vertical movement distance value of a cooking appliance moving upwards relative to a cooker;
step 2, judging and processing according to the detected vertical movement distance value:
when the vertical moving distance value is larger than or equal to a preset moving distance threshold value, turning to step 3; otherwise, turning to step 5;
step 3, detecting the flame height value of the stove;
step 4, judging according to the detected flame height value:
when the flame height value is larger than or equal to the preset flame height threshold value, adjusting the flame height value of the stove to be smaller than the preset flame height threshold value, and turning to the step 5; otherwise, turning to the step 1;
step 5, detecting an oil mist concentration value below the operating range hood;
step 6, judging and processing according to the detected oil mist concentration value:
when the oil mist concentration value is greater than or equal to a preset oil mist concentration threshold value, spraying atomized oil mist diluent below the range hood; otherwise, the step 1 is carried out.
2. The intelligent fire prevention control method according to claim 1, wherein a space between a smoke collection hood of the range hood and a kitchen range is below the range hood.
3. The intelligent fire protection control method according to claim 1, further comprising, in step 6: and adjusting the oil mist diluent injection amount according to the detected oil mist concentration value, the oil mist concentration dilution target value and the oil mist rising speed value.
4. The intelligent fire-protection auxiliary control system for realizing the intelligent fire-protection control method of any one of claim 1~3, comprising:
the oil smoke sensor (11) is used for detecting an oil mist concentration value below the operating range hood;
a spraying device (12) which sprays mist-like oil mist diluent to the lower part of the range hood;
a first detection device (13) for detecting the vertical movement distance value of the cooking utensil moving upwards relative to the stove;
the second detection device (14) is used for detecting the flame height value of the stove;
and the controller (15) is respectively connected with the oil smoke sensor (11), the spraying device (12), the first detection device (13) and the second detection device (14), performs fusion processing according to the detected oil mist concentration value, the vertical movement distance value and the flame height value, and respectively generates a spraying instruction for controlling the spraying device (12) and a flame height adjusting instruction for controlling the kitchen range to adjust the flame height.
5. Intelligent fire protection auxiliary control system according to claim 4, characterized in that the injection device (12) comprises:
a liquid storage tank (121) that stores oil mist diluent;
the pump body (122) is connected with the controller (15), and the input end of the pump body (122) is communicated with the liquid outlet of the liquid storage tank (121);
and the spraying air nozzle (123) is provided with a spraying hole which is arranged towards the lower part of the range hood, and the input end of the spraying air nozzle is communicated with the output end of the pump body (122).
6. Intelligent fire protection auxiliary control system according to claim 4, characterized in that the intelligent fire protection control system is integrated on a range hood (1).
7. The intelligent fire protection auxiliary control system of claim 5, wherein the spray nozzle (123) is trumpet-shaped, and the trumpet-shaped spray nozzle is provided with a trumpet-shaped opening facing to the lower part of the range hood.
8. Intelligent fire protection auxiliary control system according to claim 4, characterized in that at least one of the soot sensor (11), the first detection device (13), the second detection device (14) and the controller (15) is provided on a hob (2).
9. The intelligent fire-prevention control system comprises a cooker (2), and is characterized by further comprising the intelligent fire-prevention auxiliary control system of any one of claims 4~8, wherein the controller (15) is in communication connection with the cooker (2).
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| CN202111463336.8A CN114652976B (en) | 2021-12-03 | 2021-12-03 | Intelligent fire prevention control method, fire prevention auxiliary control system and fire prevention control system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105999585A (en) * | 2016-07-22 | 2016-10-12 | 珠海格力电器股份有限公司 | Fire extinguishing method, fire extinguishing system and range hood |
| US20170299195A1 (en) * | 2016-04-19 | 2017-10-19 | General Electric Company | Cooktop Fire Prevention Module with Remote Control Cooking Features |
| CN110107941A (en) * | 2019-05-09 | 2019-08-09 | 宁波方太厨具有限公司 | A kind of commercialization fume purifier of fume and the control method of device fire extinguishing |
| CN110969794A (en) * | 2019-12-24 | 2020-04-07 | 西安电子科技大学 | Kitchen fire alarm system and method for detecting human body in front of cooking bench |
| CN210402659U (en) * | 2019-09-06 | 2020-04-24 | 中山大学南方学院 | Kitchen hidden danger processing device |
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2021
- 2021-12-03 CN CN202111463336.8A patent/CN114652976B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170299195A1 (en) * | 2016-04-19 | 2017-10-19 | General Electric Company | Cooktop Fire Prevention Module with Remote Control Cooking Features |
| CN105999585A (en) * | 2016-07-22 | 2016-10-12 | 珠海格力电器股份有限公司 | Fire extinguishing method, fire extinguishing system and range hood |
| CN110107941A (en) * | 2019-05-09 | 2019-08-09 | 宁波方太厨具有限公司 | A kind of commercialization fume purifier of fume and the control method of device fire extinguishing |
| CN210402659U (en) * | 2019-09-06 | 2020-04-24 | 中山大学南方学院 | Kitchen hidden danger processing device |
| CN110969794A (en) * | 2019-12-24 | 2020-04-07 | 西安电子科技大学 | Kitchen fire alarm system and method for detecting human body in front of cooking bench |
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